User Manual
MG260 Product Specification
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agreement.
3.4 Antenna specifications
3.4.1 GSM.DCS Antenna
A GSM/DCS dual-band antenna shall work in these frequency bands and have
the following characteristics:
Characteri
stics
E-GSM
900
DCS
1800
Frequency
TX
880
to
915
MH
z
1710
to
1785
MH
z
Frequency
RX
925
to
960
MH
z
1805
to
1880
MH
z
Impedance
50
Ohms
1.5
:
1
VSW
R
Rx
max
Tx
max
1.5
:
1
Polariza
tion
Linear
Typical
ra
diated
gai
n
0
dBi
in
one
directio
n
at
least
Note
:
FLYFOT recommends a VSWR max. of 1.5:1 for the Rx and the Tx.
All aspects of this specification will be fulfilled even with a VSWR max. of 2:1 for the
Rx and the Tx
.
3.4.2 GPS antenna
The
GP
S
a
n
tenna
mus
t fulfill
the
following
requirem
ents:
Characteri
stics
GPS
Frequency
RX
1575.42
MH
z
+/-1.0
23
MH
z
Impedance
50
Ohms
VSW
R
Rx
max
1.5
:
1
Polariza
tion
RHCP
Ant
e
nna
gain
15
dB
typ.
45
dB
max
.
Typical
ra
diated
gai
n
5
dBi
in
one
direction
at
least
Supply
voltage
3
V
or
5
V
Supply
current
50
m
A
max.
for
external
supply
(GPS
_
V
AN
T
input)
Note
:
e
If a classical patch antenna is followed by an LNA, care must be taken
when placing the antennas: the DCS1800 transmission can saturate the
GPS thus decreasing the GPS performances.